Multiple gas burner



SePf- 16 1958 E. LoGNIoN ErAL 2,852,070

MULTIPLE GAs BURNER 2 sheets-sheet 2 Filed Feb. 13, 1956 m f1 W i V 7 5. M.. wf. M M wv ,l l x /o/ A 2 zw/ .w 4 25 w/ M y M M E/o ogn/on Samford Patti/lo IN VEN TORS.

MULTIPLE GAS BURNER Eioi Lognion and Samford I. Pattillo, Crowley, La., as-

signors to Long .lohn Burner Corporation, Crowley, La., a corporation of Louisiana Application February 13, 1956, Serial No. 564,984

2 Claims. (Cl. 158-106) This invention relates to improvements in gas burning equipment and has particular application in oil field boilers.

An object of the invention is to provide a natural gas burner that may be installed as original equipment in a boiler or may be used as a replacement burner, the burner so constructed as to utilize a high percentage of oxygen, yielding a hotter lire with less fuel and which requires little or no maintenance.

It has been found unnecessary to have expensive heads of the adjustable type inasmuch as the original design can be made accurate and correct. Adjustments are provided for by various means, one being screw threads, and when subjected to heat the small expansions and contractions cause failure in the adjusting parts. A further object of this invention is to provide a burner whichmay be completely dismantled by hand and yet, which is very rugged, remaining in the boiler when moving from one location to another.

A more specific object of the invention is to provide a burner primarily adapted for use in the boiler of a steam rig in an oil field, the burner utilizing inexpensive but rugged parts arranged in such a way that there are a plurality of longitudinal, parallel gas conducting pipes at right angles to their manifold, a number of gas and air mixing tubes held elevated above orifices in the parallel gas conducting pipes and having fixed deectors at the upper ends of the tubes, there being draft plates extending longitudinally between the rows of mixing tubes and located at a place between the upper and lower ends of the mixing tubes. By virtue of this construction a plentiful supply of air is available to be drawn into the mixing tubes, the arrangement of draft plates and supports for the draft plates being such that the various burner heads have a balanced supply of air fed thereto.

These together with other objects and advantages which will become subsequently apparent reside in the details of construction and operation as more fully hereinafter described and claimed, reference being had to the accompanying drawings forming a part hereof, wherein like numerals refer to like parts throughout, and in which:

Figure l is a plan view of a typical burner which is made in accordance with the principles of the invention;

Figure 2 is an elevational View of the burner in Figure l;

Figure 3 is a fragmentary sectional view taken on the line 3-3 of Figure 2, this View in enlarged scale;

Figure 4 is a perspective View of the dellector used at the upper end of each gas and air mixing tube and forming a part of each burner head;

Figure 5 is a perspective view ,of the collar which also constitutes a form of the burner head;

Figure 6 is a perspective View of a mixing tube that constitutes the burner barrel; and

Figure 7 is a fragmentary perspective view of one of the mixing tube supports for the gas and air mixing tubes.

2,852,070 Patented Sept. 16, 1958 ice As disclosed in Figure 1 the burner 10 is so constructed that it is capable of being applied to the fire box of a boiler. The primary intent although not the exclusive utility for` the burner 10, is that it be used as a replacement part for the burners of steam rigs in oil fields. The burner 1li has a gas manifold 12 that consists of a pipe with capped ends. Gas line 14 is adapted to be connected to a source of gas under pressure of approximately 8 pounds per square inch. Header 16 is connected to the gas line 14 and has its ends in registry with the interior of the manifold 12 and at a place spaced from the transverse center thereof.

the illustrated instance there are six such pipes indicated at 18, 19, 2t), Z1, 22, and 23, respectively. For larger or smaller burners the number of the gas conducting pipes maybe increased or decreased. Moreover the length of the pipes is alterable inpaccordance with the size of burner 10 which is to be installed. y The ends of the pipes 18, 19, Ztl, 21, 22 and 23 are welded or otherwise fixed to manifold 12 and are in registry with apertures, for example aperture 24 for pipe 19, there being a single aperture as the aperture 24, in the manifold 12 for each of the group of pipes. The opposite ends of pipes 18, 19, 2lb, 21, 22 and 23 are similarly connected to a header 26 consisting of a pipe of the same diameter as the pipe which forms manifold 12 and having its ends capped. Header 26 and manifold 12 are of a larger diameter than the group of pipes 18, 19, 20, 21, 22 and 23. A drain 30 is provided in the header 26 and may assume the form of a nipple with a cap on it.

There are a number of burner heads 32 in the burner v 1t). Each pipe 18, 1.9, 20, 21, 22 and 23 has a plurality of such heads along its length. The detailed pipe 19 (Figure 3) has two adjacent heads 32 and 33 to show the relationship therebetween and the actual construction thereof. Head 32 consists of a mixing tube 34 welded or otherwise rigidly fixed at its lower end in registry with an aperture 36 in a flat support plate 38. Collar 4t) which constitutes a part of head 32, is mounted on the upper end of the mixing tube 34 and is xed to bale 42. The latter is V-shaped in cross with the apical portion thereof tacked to collar 4t2 and resting upon the open upper end of ltube 34. The walls of the V-shaped deflector extend outwardly and upwardly from the open upper end of mixing tube 34. Therefore the burner head is separably mounted on the air and gas mixing tube 34. The construction of the burner head 33 and mixing tube 46 is identical to the burner head 32 with its mixing tube 34.

Support 38 is a flat longitudinal plate which is bolted as at 5@ to one flange 53 of an angular mounting bracket 54. The other flange thereof is welded to pipe 19. An adequate number of such angular mounting brackets 54 are provided along the length of support 38 whereby support 3S is mounted entirely on pipe 19.

Parallel draft plates 60, 61, 62, 63 and 64 are mounted between the rows of burner heads and their gas and air mixing tubes. They are parallel to pipes 18, 19, 20, 21, 22, and 23 and are vertically spaced between the upper and lower ends of the mixing tubes. The edges along the sides of the draft plates ,are laterally spaced from the side walls of the gas and air mixing tubes. This leaves air passageways between each pair of the draft plates. Transverse supports in the form of plates 68, 70,-

2 and 74 extend transversely across the burner pipes 1S, 19, 2t?, 21, 22 and 23 and are mounted thereover. The means for mounting the plates 68,*70, 72 and 74 are preferably angle brackets, such as the brackets 76 for support plate 62;, the latter being welded to the upper ends thereof and to the bottom surfaces of each of the draft plates. Mounting bracket 76, being typical of all of the mounting brackets for the draft plate supports,

A plurality of parallel gas conducting.'` pipes are arranged at right angles to` the manifold 12. In

34, the orifice 86 (Figure 3) being in axial alignmentA with its mixing tube 34 and vertically spaced therefrom.

In operation the gas burner is applied to the steam boiler as original equipment or as a replacement for the original equipment. After being so installed gas under pressure is applied in the gas line 14, being controlled by a standard valve. This gas enters the manifold 12 and passes into the bank of pipes that are in registry with the manifold 12. Accordingly, the gas issues through the orifices S6 and into the mixing tubes of the burner heads, yinducing air along with it into the. mixing tubes. This air and gas mixture passes through the open upper end of each mixing tube and flares outwardly as directed by the detlectors 42 in the heads in the burner. By properly dimensioning the parts, for example the manifold being a three inch pipe while the parallel pipes connected to it are two inch pipes and the mixing tube is also a two inch pipe, and by having a distance of approximately one inch between support38 and orifices 86, about 8 pounds per square inch gas pressure applied to the manifold will cause a flame to burn approximately 4 inches above the deector 42. Inasmuch as the llame is detached 4 inches from the burner head, the burner heads remain clean and last a considerable time.

The air is induced into the mixing tube 34, flowing around the pipes, supports 38 and between the supports for the draft plates and the passages between the draft plates.

The foregoing is considered as illustrative only of the principles of the invention. Further, since numerous modications and changes will readily occur to those skilled in the art, -it is not desired to limit the invention to the exact construction and operation shown and described, and accordingly, all suitable modifications and equivalents may be resorted to, falling within the scope of the invention as claimed.

What is claimed as new is as follows:

1. In a burner, the combination of'a manifold, a header spaced from said manifold, a plurality of parallel gas conducting pipes extending between said header and said manifold and secured in registry with each, each gas conducting pipe having a plurality of orifices for the passage of gas therethrough, supports mounted above said orifices a predetermined distance and parallel to said gas pipes, said supports having a plurality of openings, gas and air mixing tubes secured in said openings and carried perpendicular to and by said supports, detachable heads on said mixing tubes, draft plates generally'parallel to said gas conducting pipes and both horizontally and vertically spaced therefrom, said draft plates located between said gas conducting pipes and said detachable heads,

-and upstanding support plates with which said draft of a manifold, a header spaced from said manifold, a

plurality of parallel gas conducting pipes extending between said header and said manifold and secured in registry with each, each gas conducting pipe having a plurality of upwardly opening orifices for the passage of gas therethrough, supports mounted above said 4orifices a predetermined distance and parallel to said pipes, said supports having a plurality of openings which are of larger diameter than said orifices and in alignment therewith, gas and air mixing tubes spaced in said openings and carried by said supports, heads on said mixing tubes, opstanding support plates transversely disposed over said parallel gas pipes, draft plates secured to said support plates and arranged generally parallel to said gas conducting pipes both horizontally and vertically and spaced therefrom, said draft plates being located between said gas conducting pipes and said heads, each head including a gas and air deector provided with an apex and upwardly and outwardly extending sides, and means attached to said apex and mounted on the upper end of one of said mixing tubes for retaining said bale in an upwardly protruding disposition on said mixing tube. 

